When I got my dog 4 years ago as a pup, I had my students, about 100 of them, all suggest names for her. I wrote them all down on a piece of paper, used a photo of the then 5 week-old pup on my computer's desktop, then over the next few weeks I crossed off names that didnt seem right. It came down to two names, Penny or Sadie. I went with Penny. She just looked like a Penny.
It takes time to figure out the right name. You may want to spend time with her before making your final decision, perhaps her personality will help you decide...but you will come up with the right name. I agree a one or two syllable name is best.
Border Collies are beautiful...high energy, super intelligent working dogs.